Usain Bolt’s hoping to sign off from major athletics competition with one last gold medal tonight.
The sprint superstar will lead Jamaica’s chances in the 4-by-100-metres relay at the World Championships in London.
They need to get past this morning’s heats first.
Bolt only managed bronze in the individual 100-metres – and ahead of retiring, he’s unsure of where he ranks among the sporting greats.
Meanwhile, Mo Farah races on the track for the last time at a major athletics event.
The four-time Olympic champion aims to complete the distance double for the third World Championships in a row when he goes in the 5-thousand-metres final tonight.
Farah retained his 10-thousand gold on the opening night.